Punch press



FIL1. 1

Dec. 1, 1931. A. c. WALDVOGEL 1,834,191

PUNCH PRESS 7 Filed Jan. 16, 1930 2 Sheets-Sheet 1 INVENTOR. flzafxr 6. W/HDVO6IL.

BY 5 Z myfm A TTORNEYJ.

Dec. 1, 1931. A WALDVOGEL PUNCH PRESS Filed Jan. 16,

I 2 Sheets-3heet INVENTOR.

m M M 7 M i ATTORNEYi Patented Dec. 1, 1931 UNITED STATES ALBERT C. WALDVOGEII, OI RICHIOHD HIIGKTQ'IIBSOUBI PUNCH rams Application ma January 10, mo. Serial Io. 4521.100.

The invention relates to a punch press particularly applicable for use in punching a continuous succession of holes or notches in a continuous ribbon of material.

The principal object of the invention is to provide such a punch presswhich may be simply and economically built and which will operate at a hi h rate of speed.

The principa feature of the invention resides in the provision of means for continuousl feeding a strip of material through the mac 'ne to ether with movable punching mechanism or punching a series 0 holes or notches in the said strip while passing therethrou h, the punching mechanism moving with 516 strip of material during each punching operation and returning to initial position when said operation is com leted.

Another feature resides in the act that the movement of the punching mechanism is ac-. complished b3 pull of the strip of material when engage with the punch.

Other ob ects and features of the invention will be more fully understood from the aacompanying drawings and the following descri tion and claims:

1g. 1 is an elevational view of the end of the apparatus to which the ribbon of material is admitted. Fig. 2 is an elevationah view of the opposite end of the apparatus. 3 is a central elevational section thereof. base casting 10 supports a frame member 11 upon which is formed a worm gear housing12. A worm shaft13 is journaled in the said housing and carries a worm 14 adapted to engage a worm wheel 15. The worm wheel 15 is mounted upon a shaft 16 'ournaled in the frame member 11. The gear ousing 12 is closed'by a cover member 17 forming a second bearing for the shaft 16.

The frame member 11 also supports in suitable bearings a shaft 18 cal ing a roller 19.

A second roller 20 is positioned directly above the roller 19 and is supported upon a shaft 21. The ends of the shaft 21 are carried in vertically slidable bearing members 22 mounted upon the frame member 11. The cover member 17 carries a pair of projecting arms 23 threadedly engaging vertical stems 24. Each of the stems 24 carries at itslower end a flan 25. A compression spring 26 is interpose between each of the flanges 25 and one of the bearing members 22. he upper end of each of the stems {24 terminates in a head 27 through which is inserted a pin 28 for rotation of the stem. A lock nut 29 is carried by each stem 24 adjacent the corresponding arm 23. By this means the roller 20 is maintained in yielding engagement with the roller 19 and the pressureof said engagement may be adjusted by turning the stem 24 and may be maintained by means of the lock nut 29. 1

The base casting 10 carries a pair of upright supporting members 30 in turn carry,- ing a transverse shaft 31 journaled therein. A yoke member 32 is supported upon said shaft and in turn supports a pair of downwardly-extending parallel bolts- 33. At the lower end of the said bolts a yoke member 34 is su ported by means of nuts 35. A substantia y rectangular "casting 36 is slidably mounted upon the bolts 33 and is an ported v by means of compression springs 8 interposed between said casting and the yokeeu j member 34. j

The shaft 16 carries a flan cou ling 38 and a matificenplingw is u thereto and carried a short shaft 40 in turn suprted upon aring members 41 extending tween the upright members 30. A cam 42 having a plurality of rejecting portions 48 is carried upon the sha t 40 between the bearing members 41 and is positioned within an opening 44 in the casting 36. A ball or roller 45 is carried in a suitable cup in the casting 36 and is adapted to engage the cam 42. It will be noticed in Fig. 3 that the surface of the cam projections 43 is formed on the arc of a circle having its center at the center of shaft 31 when said pro'ections are in their lowermost position. us, the yoke 32 and the members carried thereby may swing about the shaft 31 without disturbing the contacting relation between the said cam and the ball or roller. The casting 36 carries upon its lower surface a punch-holding member 46 herein illustrated as carrying a pair of punch members 47. A die block 48 is carried by the yoke member 34 and is fitted with die open- 1 material to the right as from the material.

t1ons upon the ribbon ings not shown for cooperating with the punches 47. A stripping plate 49 is carried upon the die member 48 and is formed with openings 50 therein through which the ribbons of material to be punched may be passed.

A cord 51 is attached to the die member 48 and passes over a pulley 52 supported upon the base casting 10. A counterweight 53 is hung upon the downwardly-extending portion of the cord 51. An adjustable stop member 54 is supported upon the base casting 10 and is adapted to contact with the yoke member 34.

In the operation of the device,

a pair of ribbons of material 55 are threaded through the o enings 50 and between the rollers 19 and 20. he shafts 13- and 18 are then rotated by any suitable power means the ribbons of material are continuously drawn through the machine and the cam member 42 is rotated. When one of the cam projections 43 engages the ball or roller 45 the casting 36 and the punches 47 carried thereby are forced downwardly until the punches engage the ribbon of material. When this engagement takes place, the yoke member 32 and the members carried thereby are drawn by the ribbon of illustrated in Fig. 3, the counterweight 53 being raised. Further rotation of the cam 42 forces the unch% 47 through the material, cutting t e desired holes or notches therein. When the cam projection 43 is disengafged from the ball or roller 45, the springs 37 orce the castings 36 and punches 47 upward to disengage the punches The counterweight 53 then returns the swinging members to initial position with the yoke 34 resting against the stop member 54. The cycle is repeated by continued rotation of the shafts 13 and 18 and a succession of notches or holes is thereby lplunched in the ribbons of material.

e apparatus herein described is particularly app icable for punching notches in a ribbon of drawn spring steel to be used for the internal expanding rin for automotive pistons 'but is equally a dicable to a wide variet of other uses. he apparatus may be use in tandem with other machines or made a part of machines performing other operaof material. When so and 39 are made radial- 11v1 ad'ustable with respect to each other so 1: at t e punching operation may be adjusted with relation to other operations upon the ribbon.

The invention claimed is:

1. A punch press including a supporting frame, mechanism for continuously s'uppl ing a ribbon of material to be punched, punc ing elements pivotally sus ended from a portion of said rame, a sha carried upon another ortion of said frame, a cam carried by Said sliaft, and a rotatable member carried by one of said punching elements and adapted used, the couplings 38 a second frame to engage said cam for bringing said punching elements into ribbon of material, said cam bein shaped to engage said rotatable member in ependently of the motion of said punch members about their ivotal mounting.

2. punch press including a supporting frame, mechanism for continuously supplying a ribbon of material thereto, punching elements pivotally mounted upon a portion of said frame, a shaft rotatably mounted upon another portion of said frame, a cam carried by said shaft and adapted to engage one of said punching elements for bringing the same into punching relation with said ribbon of material, said cam being shaped to make said engagement independently of the movement of said punching elements upon their pivotal mounting.

3. A punch press including a supporting frame, a horizontal shaft supported t ereon, pivotally mounted upon said shaft and hanging beneath the same, said frame including a pair of spaced-apart rods and a yoke member carried upon the lower ends thereof, a punch member vertically slidable upon said vertical rods, a die member carried by said yoke and adapted to copperate with said unching member, mechanism for continuous y feeding a ribbon of material between said die and punch members, a horizontal shaft extendin between said vertical rods, a cam carried Ey said last-mentioned shaft and having protuberances adapted to engage said punch member for forcing the same downwardly to engage and unch said ribbon, said r votally-mounted rame and members carried-thereby being movable by and with said ribbon-inthepunchin operation, and means for returning" said rame to initial position upon the comp etion of punching. 4. A punch press including a supporting frame, mechanism for continuously supplying a ribbon of material thereto, punching elements pivotally mounted upon a portion of said frame, a shaft rotatably mounted upon another ortion of said frame, the axis of said sha lying in a plane transverse to the axis of the pivotal mounting of said unching elements, a cam carried by said s aft and adapted to engage one of said punching elements for bringing the same into punchin relation with said ribbon of material, sai cam being shaped to make said engagement independently of the 'movement of said punching elements upon their pivotal mountin Tn witness whereof, I have hereunto aflixed my signature.

ALBERT C. WALDVOG-EL.

punching relation with the 

